Behold I tell you a mystery
1Corinthians 15:51,52 Behold, I tell you a mystery: We shall not all sleep; but we shall all be changed, 52. In a moment, in a twinkling of an eye, at the last trumpet;
The trumpet shall sound
1Corinthians 15:52b-53 the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. 53. For this corruptible must put on incorruption, and this mortal must put on immortality.